Claims
- 1. A process for producing an acrylonitrile polymer containing amino groups and having a porous structure containing micro-pores with an average size of from 50 to 2000 .ANG. and pore volume of not less than 0.2 cm.sup.3 /g, which comprises reducing an acrylonitrile polymer having said porous structure in an inert non-solvent for said polymer with lithium aluminum hydride.
- 2. A process according to claim 1, wherein the acrylonitrile polymer is in the form of a fiber, a particle, a membrane or a hollow filament.
- 3. A process according to claim 1, wherein the acrylonitrile polymer is a polymer of an acrylonitrile monomer of a copolymer of said monomer with a comonomer having ethylenically unsaturated double bond.
- 4. A process according to claim 3, wherein the acrylonitrile monomer is acrylonitrile, methacrylonitrile, .alpha.-chloroacrylonitrile of cinnamnitrile.
- 5. A process according to claim 3, wherein the comonomer is a styrene monomer, an acrylic acid ester monomer, a conjugated diene, a halogenated olefin, a vinyl ether monomer, a vinyl ketone monomer, a vinyl ester monomer, an amide vinyl monomer, a basic monomer or a polyfunctional monomer.
- 6. A process according to claim 3, wherein the acrylonitrile polymer has a porous structure with micro-pores having sizes distributed in the range form about 100 to 1,000 .ANG. and is constituted of polyacrylonitrile containing 90% or more of acrylonitrile shaped in the form of a fiber, a particle, a membrane or a hollow filament.
- 7. A process according to claim 3, wherein the acrylonitrile polymer is a copolymer consisting of acrylonitrile, divinyl benzene and vinyl ethyl benzene shaped in the form of a fiber, a particle, a membrane or a hollow filament.
- 8. A process according to claim 1, wherein the non-solvent is an organic solvent which does not dissolve an acrylonitrile polymer and an acrylonitrile polymer containing amino groups.
- 9. A process according to claim 8, wherein the organic solvent is diethyl ether, dioxane or tetrahydrofuran.
- 10. A process according to claim 1, wherein the reduction is effected to an extent which does not make the acrylonitrile polymer containing amino groups substantially soluble in water.
- 11. A process according to claim 10, wherein the reduction is carried out for 10 minutes to 30 hours.
- 12. A process according to claim 1, wherein the acrylonitrile polymer contains amino groups in an amount which does not make the polymer substantially soluble in water.
- 13. A process according to claim 12, wherein the acrylonitrile polymer contains 20 .mu.M to 1000 .mu.M of amino groups per gram of the polymer.
- 14. A process according to claim 1, wherein the acrylonitrile polymer has a porous structure with micro-pores having sizes distributed in the range from about 100 to 1,000 .ANG..
Priority Claims (1)
Number |
Date |
Country |
Kind |
53-18001 |
Feb 1978 |
JPX |
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Parent Case Info
This application is a continuation-in-part of our prior U.S. application Ser. No. 103,731, filed Dec. 14, 1979, now abandoned, which is a divisional of U.S. application Ser. No. 10,997, filed Feb. 9, 1979, now abandoned.
Foreign Referenced Citations (3)
Number |
Date |
Country |
1226303 |
Oct 1966 |
DEX |
2084750 |
Dec 1971 |
FRX |
2228785 |
Dec 1974 |
FRX |
Non-Patent Literature Citations (1)
Entry |
"Reduction of Polymers Using Complex Metal Hydrides", by Cohen et al., J. Org. Chem. 24, 1404-1407 (1959). |
Divisions (1)
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Number |
Date |
Country |
Parent |
10997 |
Feb 1979 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
103731 |
Dec 1979 |
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